refactor(bookings): simplify capacity tracking to use seats

Replace 'pax' booking mode with 'seat'
Consolidate inventory summary to track only seat counts
Update database schema and UI for seat-centric capacity

server/utils/booking-repository.ts

@@ -11,7 +11,7 @@ import type {
   TicketType
 } from '~~/shared/booking'
 
-import { calculateBookingInventorySummary, isBookingStatus } from '~~/shared/booking'
+import { calculateBookingInventorySummary, isBookingMode, isBookingStatus } from '~~/shared/booking'
 
 import { randomToken, toIsoString } from './base64url'
 import { ensureDatabaseReady } from './db-init'
@@ -23,7 +23,7 @@ type DbBookingRow = {
   receipt_token: string
   customer_name: string
   customer_phone: string
-  booking_mode: BookingMode
+  booking_mode: string
   quantity: number | string
   seat_count: number | string
   ticket_type: TicketType
@@ -54,7 +54,7 @@ type DbBookingSeatWithBookingRow = DbBookingSeatRow & {
   receipt_token: string
   customer_name: string
   customer_phone: string
-  booking_mode: BookingMode
+  booking_mode: string
   quantity: number | string
   seat_count: number | string
   ticket_type: TicketType
@@ -67,6 +67,7 @@ type DbBookingSeatWithBookingRow = DbBookingSeatRow & {
 
 type DbBookingSettingsRow = {
   total_tables: number | string | null
+  total_seats: number | string | null
   updated_at: Date | string
 }
 
@@ -74,16 +75,22 @@ function parseInteger(value: number | string) {
   return typeof value === 'number' ? value : Number.parseInt(value, 10)
 }
 
+function normalizeBookingMode(value: string): BookingMode {
+  return isBookingMode(value) ? value : 'seat'
+}
+
 function mapBooking(row: DbBookingRow): PublicBooking {
+  const seatCount = parseInteger(row.seat_count)
+
   return {
     id: row.id,
     confirmationToken: row.confirmation_token,
     receiptToken: row.receipt_token,
     customerName: row.customer_name,
     customerPhone: row.customer_phone,
-    bookingMode: row.booking_mode,
+    bookingMode: normalizeBookingMode(row.booking_mode),
     quantity: parseInteger(row.quantity),
-    seatCount: parseInteger(row.seat_count),
+    seatCount,
     ticketType: row.ticket_type,
     unitPrice: parseInteger(row.unit_price),
     totalPrice: parseInteger(row.total_price),
@@ -97,14 +104,16 @@ function mapBooking(row: DbBookingRow): PublicBooking {
 }
 
 function mapReceiptBooking(row: DbBookingRow | DbBookingSeatWithBookingRow): ReceiptBooking {
+  const seatCount = parseInteger(row.seat_count)
+
   return {
     id: row.id,
     receiptToken: row.receipt_token,
     customerName: row.customer_name,
     customerPhone: row.customer_phone,
-    bookingMode: row.booking_mode,
+    bookingMode: normalizeBookingMode(row.booking_mode),
     quantity: parseInteger(row.quantity),
-    seatCount: parseInteger(row.seat_count),
+    seatCount,
     ticketType: row.ticket_type,
     unitPrice: parseInteger(row.unit_price),
     totalPrice: parseInteger(row.total_price),
@@ -130,13 +139,17 @@ function mapBookingSeat(row: DbBookingSeatRow): PublicBookingSeat {
 function mapBookingCapacitySettings(row: DbBookingSettingsRow | undefined): BookingCapacitySettings {
   if (!row) {
     return {
-      totalTables: null,
+      totalSeats: null,
       updatedAt: null
     }
   }
 
+  const totalSeats = row.total_seats === null
+    ? (row.total_tables === null ? null : parseInteger(row.total_tables) * 10)
+    : parseInteger(row.total_seats)
+
   return {
-    totalTables: row.total_tables === null ? null : parseInteger(row.total_tables),
+    totalSeats,
     updatedAt: toIsoString(row.updated_at)
   }
 }
@@ -521,6 +534,7 @@ export async function getBookingCapacitySettings(): Promise<BookingCapacitySetti
   const [row] = await sql<DbBookingSettingsRow[]>`
     select
       total_tables,
+      total_seats,
       updated_at
     from booking_settings
     where id = 'default'
@@ -531,7 +545,7 @@ export async function getBookingCapacitySettings(): Promise<BookingCapacitySetti
 }
 
 export async function updateBookingCapacitySettings(input: {
-  totalTables: number | null
+  totalSeats: number | null
 }): Promise<BookingCapacitySettings> {
   await ensureDatabaseReady()
   const sql = getSqlClient()
@@ -539,11 +553,12 @@ export async function updateBookingCapacitySettings(input: {
   const [row] = await sql<DbBookingSettingsRow[]>`
     update booking_settings
     set
-      total_tables = ${input.totalTables},
+      total_seats = ${input.totalSeats},
       updated_at = now()
     where id = 'default'
     returning
       total_tables,
+      total_seats,
       updated_at
   `